Detection efficiency and imaging performance of a 25.4 × 25.4 × 24 mm3 compton camera based on a single voxelized scintillator

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-03-24 DOI:10.1016/j.radphyschem.2025.112754

Seonghee Choi , Hyounggun Lee , Wonho Lee

{"title":"Detection efficiency and imaging performance of a 25.4 × 25.4 × 24 mm3 compton camera based on a single voxelized scintillator","authors":"Seonghee Choi , Hyounggun Lee , Wonho Lee","doi":"10.1016/j.radphyschem.2025.112754","DOIUrl":null,"url":null,"abstract":"<div><div>Conventional Compton cameras have FOV limitations that affect their detection efficiency. Three-dimensional voxelized detectors that integrate scattering and absorption functions address these limitations. This study demonstrates the enhancement of a Compton camera system by expanding the voxelized detector volume to increase its detection efficiency and reduce data acquisition time for reconstructing radiation sources. By doubling the size of a previous 4 × 4 × 4 voxel detector (12.6 × 12.6 × 12 mm<sup>3</sup>) to an 8 × 8 × 8 (25.4 × 25.4 × 24 mm<sup>3</sup>), both the angular resolution and signal-to-noise ratio were significantly improved. Simple back-projection and list-mode maximum likelihood estimation methods were used for image reconstruction, and the expanded system showed a significant decrease in measurement times by up to 20 times with equivalent image quality. This advancement is expected to provide substantial improvements in the deployment of lightweight and high-efficiency Compton cameras in unmanned measuring equipment, such as in drones, for various industrial applications.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"233 ","pages":"Article 112754"},"PeriodicalIF":2.8000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Physics and Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0969806X25002464","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Conventional Compton cameras have FOV limitations that affect their detection efficiency. Three-dimensional voxelized detectors that integrate scattering and absorption functions address these limitations. This study demonstrates the enhancement of a Compton camera system by expanding the voxelized detector volume to increase its detection efficiency and reduce data acquisition time for reconstructing radiation sources. By doubling the size of a previous 4 × 4 × 4 voxel detector (12.6 × 12.6 × 12 mm³) to an 8 × 8 × 8 (25.4 × 25.4 × 24 mm³), both the angular resolution and signal-to-noise ratio were significantly improved. Simple back-projection and list-mode maximum likelihood estimation methods were used for image reconstruction, and the expanded system showed a significant decrease in measurement times by up to 20 times with equivalent image quality. This advancement is expected to provide substantial improvements in the deployment of lightweight and high-efficiency Compton cameras in unmanned measuring equipment, such as in drones, for various industrial applications.

查看原文本刊更多论文

基于单体素闪烁体的25.4 × 25.4 × 24 mm3康普顿相机的检测效率和成像性能

传统的康普顿相机有视场限制，影响其检测效率。集成了散射和吸收功能的三维体素化探测器解决了这些限制。本研究通过扩大体素化探测器体积来增强康普顿相机系统，以提高其检测效率并减少重建辐射源的数据采集时间。将4 × 4 × 4体素检测器（12.6 × 12.6 × 12 mm3）的尺寸扩大到8 × 8 × 8 (25.4 × 25.4 × 24 mm3)，大大提高了探测器的角分辨率和信噪比。采用简单的反向投影和列表模式最大似然估计方法进行图像重建，扩展后的系统在同等图像质量的情况下，测量次数显著减少了20倍。这一进步有望为在无人测量设备（如无人机）中部署轻型高效康普顿相机提供实质性改进，用于各种工业应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.